Concrete-mixer.



No. 842,902. v PATENTED PEB'.5, 190-7.

a. E. MQARTHUR.

CONCRETE MIXER. APPLICATION Hum JAN. 17, 1906.

2 SHEETS-SHEET 1.

- wane/A925 PATENTED FEB. 5, 1907.

No. 842,902. E

G. E; MQARTHUR. CONCRETE MIXER.

APPLICATION FILED JAN. 17, 1906.

2 SHEETS-SHEET 2.

fig a 0 if /fip c p I o 4 /7 g a f Z 7/ a a a a a 3 5] uoanfbz I ltmm v ARTHUR, a citizen of the GEORGE ELMER MoARTHUR,

OF "EATON RAPIDS, MICHIGAN) CONCRETE-MIXER .No. 842,902. Specification, of

Letters Patent. Patented Feb. 5,1907.

Application filed January 1'], 1906- Serial No. 296,486.

To all whomit may concerm Be it known that I, GEORGE ELMER Mo- I United States, re-

siding .at Eaton Rapids, inflthecounty of .Eaton and State of Michigan, have invented a new and useful Concrete-Mixer; and I do hereby; declare the following to be' a'full, clear, and exact descri tion of theinvention, suchas will enable 0t ers skilled in the art to which it-appertains to makeand use the same.

This invention relates to machines for mixmg cement, concrete, mortar, and other similar materials; and it has particular reference to that class of mixing-machines which are known as batch-mixers'in contradistinction to machines for continuously mixing ma.- terials of this character, the batch-mixer being deemed by some preferable partly on account of the facility with which the proportion ofthe ingredients may be regulated and partly for the reason that in a continuous mixer the grout or concrete discharged fromthe machine is liable to setand harden, while in the batch-mixer the agitation-of: the material may be kept up until it is ready tobe ..used, thus preventing premature setting;

Fig. 4 is a sectional view taken on the plane indicated by the line 4 4 in Fig. 1.

Corresponding parts in the several figures are indicated by like characters of reference. 1 1 designate blocks which may be regarded as constituting the base of the machine, it being, understood that the latter may be supported upon a truck, if preferred, so as to be readily transportable.- To provide hearings or supports forthe movable parts of the machine, a series of-uprights 2.2 are mounted upon the supporting-blocks. Two of these shaft or sleeve. 20, wherein is journaled a shaft 3, having at one end a spur-wheel 4, meshing with apinion 5, carried by the shaft 6 ofa motor 7, which motor is furnished with ,sufficient power from any suitable sourceof supply. The end of the shaft 3 opposite to that carrying thespurwheel 4 carries a bevel-gear 8, meshing with a bevel-gear 9 upon a count'er-sh'aft'lO, which is'supported fOT-IOtiililOllliIl a box or-bearing 14 upon a rocking frame Y The rocking-frame F may be of any suitableand desired shape and dimensions, and said frame is provided at one side thereof with a One'object of the invention is to provide an eflicient machine of few parts in which'is embodied a mixing-drum moimtedffor rota tion in an oscillatory-"frame,which latter may be readily rocked 'oroscillated for the urpose of discharging the contents of. the m without interrupting the rotation' of the latter.

Further objects of the inventionare to simplify and improve the general construc-- tion and operation 'o'f this class of machines and to .provide a device which shall be thor-f oughl'y efficient for the pur oses'i'ndicatedL With these and other en s in view, which will readily appear as thenature of the in-'v vention is better understood, the same consists in the improved construction andf'noyel arrangement and combination of'parts, which willbe hereinafter fully described, and particularly pointedxout in theclaims.

In-the accompanying drawings has been illustrated asimple and referred form of the invention, and in said awings Figure 1 is a top plan view ofthe im roved mixerr Fig. 2isaside elevation. 1g. 3

a sectional view taken on the-plane indicated.

by the line 3-3 in-Fig. 1, omittingthe motor.

laterallyextending yoke 30, having a-box 0r bearing latter is provided with a collar 21- to prevent lateral displacement of the frame. The side of the frame F opposite to that having the yoke 30 is provided with a stub-shaft 3 1, which is j ourna'led in a suitable bearingupon axial alinement with the drive-shaft 3 and with the sleeve 20, supporting the bearing 19, in order that the frame F maybe or oscillated upon its bearings.- ings 14 of the counter-shaft 10jare upon the,

part ofthe frame 'F, and it isv obvious that said frame may be .rocked or oscillated upon its bearings without interrupting the rotationof the shafts 3 and'lO or throwing the gears 8 and 9 upon said shaftsou't of mesh.

Journaled-in bearing 13 u on the frame F parallel to the shaft 10 is a shaft 22, carrying a pair of wheels or spiders 23.

'drical body. having-'frustuIn-shaped ends, the

casing of said drum being secured interiorly upon the rims of the whee one of. the uprights 2, said stub-shaft beingin yoke 30, which is regardedas constituting a y j 24designates, the mixing-drum, which consists of a cylin-,

sor spiders 23, the

uprights support a tubularv 19 engaging the sleeve .20, which readilyrocked The bea'r at right angles to the axis-o the shaft 3 and spokes of which, 32 extend through said c as- 'ing, as will be clearly seen; by reference to Figs. 3 and 4 of the drawings. By this construction great strength is insured and the 5 interior of the casing will not be obstructed by the wheel-rims, as would.be the caseif the shell or casing was secured exteriorly upon said rims; which latter would then to some extent obstruct the "discharge ofma- :0 terial from the drum. I am also enabled to utilize oneof the wheels 23 as a sprocketwheel, the same'being provided with teeth 2 5, as will be seen by referenceto the drawings, said sprocket-wheel being connected by the link belt 12 with thes'Prockebwheel-ll upon the shaft l'OQ-froni which latter rotary motion will thus beimparted to the drum.

It will be particularly observed that by ,the construction herein described, a very 2 o firm support is provided for the-mixing- -drum,-Wh-ich latter'is thus enabled torcarr'y a heavy load without straining the bearings External bearing or supportingmeans, such as wheels or rollersf-are avoided, such being objectionable onaccount of the strain. coca s-ioned thereby and their liability-to become clogged and obstructed.

Uponltheinside of the *frustum-h-ap-ed ends at right angles-with the inner surfa'c'e of go'the drum'are angled mixers or stirrers '28, which are disposed diagonally to'the angled mixers or stirrers 29, which are disposed longitudinally-of the drum upon the cylindrical 1 portion Of'the latter. Said angled 'mi-xers at 5'J'the opposite-ends of the drum are disposed diagonally, so that when the drum rotates ithe contents is thrown toward the center "from either end, and the angled mixers which lie longitudinally of the drum serve to elevate 40 the concrete to a sufficient. height, after which gravitation causes it to break and fall to the bottom of the drum, and also for the reason that by being thus placed when: the dumping 'tak'es place'the contents will be angered out 5 more rapidly, and for the furtherreason that in a wet mixture the angled mixers being thus placed sloshing out. at the ends=is prevented. A Upon the frame F adiacent to the receivmg end of the drum there is supported a chute or'hopper 27, through Will'ChlillGdIk' gredients that are to be mixed maybe passed into the drum.

The frame F isprovided at one end with a 5 5 -'liand-lever 34, whereby it may be readily tilted, said hand-lever being provided with a the hopper or chute 27. ents have been thoroughly mixed, the lever 75 .sprmg actuated stop member 35, engaging a segment-rack 36, whereby the parts may be 1 retained in position at various adjustments.

The rocking movement of the frame is lim- F ited by means of stems 17., adjustably mount 1 ed in tubular standards 16, where theyv may .be secured by set-screws 18.

' From the foregoing descriptiom taken in connection with the drawings hereto annexed, the operation and advantages of-this invention will be readily understood. Rotary motion is imparted to' the drum-from the motor 7, which-as conventionally indicated in the drawings may be operated by 7o electricity-15' designating the switch. The

ingredients to be mixedmay be-suppli'ed to the drum While the latter is in motion through QWh en the ingre'cli-* 34 is manipulated to tilttheframecarrying the drum, the contents of which will thus be discharged, after which 'thedrum, still revolving, :is restored to an "approximately 7 horizontal receiving position.

Having thus described the invention, -1 claim-- Y Q In a machine of the class described, a rockingor tiltable frame-having a lat'erally-extending yoke sai'd-yoke'being provided with a box or'bearin'gand said frame beingrprovided at=the sides opp'osite'the laterally ex= tending yoke with .a'stub-shaft, a'plunalityof uprights or supports arranged in alinement with each other, a sleeve supported by 0 two of said uprights and affording a bearing for the box upon the yoke of the tilting frame,- a bearing u on one of the uprights for thetub-shaft'of t e tilting frame said-bear.

ing being in axial alinement with the bearing- 9 5' sleeve supporting the yoke, a driven shaft journaled in said-bearing-sleeve, 'a countershaft journaled upon the yoke and receiving motion from the driven shaft; a mixing-drum carried by the tilting frame means for transtoo mitting motion to themixing-drurrr from' the counter shaft, a hand-lever connected with 

